/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Hibernation support specific for loongarch - temporary page tables
 *
 * Licensed under the GPLv2
 *
 * Copyright (C) 2009 Lemote Inc.
 * Author: Hu Hongbing <huhb@lemote.com>
 *	   Wu Zhangjin <wuzhangjin@gmail.com>
 * Copyright (C) 2020 Loongson Technology Co., Ltd.
 */
#include <linux/linkage.h>
#include <asm/asm-offsets.h>
#include <asm/regdef.h>
#include <asm/asm.h>

.text
SYM_FUNC_START(swsusp_asm_suspend)
	la t0, saved_regs
	PTR_S ra, t0, PT_R1
	PTR_S sp, t0, PT_R3
	PTR_S fp, t0, PT_R22
	PTR_S tp, t0, PT_R2
	PTR_S s0, t0, PT_R23
	PTR_S s1, t0, PT_R24
	PTR_S s2, t0, PT_R25
	PTR_S s3, t0, PT_R26
	PTR_S s4, t0, PT_R27
	PTR_S s5, t0, PT_R28
	PTR_S s6, t0, PT_R29
	PTR_S s7, t0, PT_R30
	PTR_S s8, t0, PT_R31
	b swsusp_save
SYM_FUNC_END(swsusp_asm_suspend)

SYM_FUNC_START(swsusp_asm_resume)
	la t0, restore_pblist
	PTR_L t0, t0, 0
0:
	PTR_L t1, t0, PBE_ADDRESS  /* source */
	PTR_L t2, t0, PBE_ORIG_ADDRESS /* destination */
	PTR_LI	t3, _PAGE_SIZE
	PTR_ADDU t3, t3, t1
1:
	REG_L t8, t1, 0
	REG_S t8, t2, 0
	PTR_ADDIU t1, t1, SZREG
	PTR_ADDIU t2, t2, SZREG
	bne t1, t3, 1b
	PTR_L t0, t0, PBE_NEXT
	bnez t0, 0b
	la t0, saved_regs
	PTR_L ra, t0, PT_R1
	PTR_L sp, t0, PT_R3
	PTR_L fp, t0, PT_R22
	PTR_L tp, t0, PT_R2
	PTR_L s0, t0, PT_R23
	PTR_L s1, t0, PT_R24
	PTR_L s2, t0, PT_R25
	PTR_L s3, t0, PT_R26
	PTR_L s4, t0, PT_R27
	PTR_L s5, t0, PT_R28
	PTR_L s6, t0, PT_R29
	PTR_L s7, t0, PT_R30
	PTR_L s8, t0, PT_R31
	PTR_LI v0, 0x0
	jirl    zero, ra, 0
SYM_FUNC_END(swsusp_asm_resume)
